97685647273 has 4 divisors (see below), whose sum is σ = 100325799940. Its totient is φ = 95045494608.

The previous prime is 97685647259. The next prime is 97685647309. The reversal of 97685647273 is 37274658679.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93106147689 + 4579499584 = 305133^2 + 67672^2 .

It is a cyclic number.

It is not a de Polignac number, because 97685647273 - 2¹³ = 97685639081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97685647373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320076278 + ... + 1320076351.

It is an arithmetic number, because the mean of its divisors is an integer number (25081449985).

Almost surely, 2^97685647273 is an apocalyptic number.

It is an amenable number.

97685647273 is a deficient number, since it is larger than the sum of its proper divisors (2640152667).

97685647273 is a wasteful number, since it uses less digits than its factorization.

97685647273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640152666.

The product of its digits is 106686720, while the sum is 64.

The spelling of 97685647273 in words is "ninety-seven billion, six hundred eighty-five million, six hundred forty-seven thousand, two hundred seventy-three".